Photovoltaic solar panels where ever possible should form part of any green renovation.
What size installation?
- Residential roof mounted photovoltaic systems typically start at 1.5kW and range up to 5kW
- Ideally you would install a system which had an average annual production the same as your power consumption.
- The ATA have created Sunulator, a spreadsheet tool allowing you to model the financial effect of different size solar systems. The tool includes the ability to import historical usage data from your energy provider and makes allowance for various electricity providers pricing tariffs.
- Before deciding to install larger arrays, consider how much the equivalent spend would allow you to reduce your consumption by? For example installation of solar hot water, energy efficient lighting, draft sealing, thermal curtains, solar air heaters.